Machine for shaping prepared blanks in the manufacture of horseshoes.



R. J. FRY. MACHINE FOR SHAPING PREPARED BLANKS IN THE MANUFACTURE OF HORSESHOES.

APPLICATION FILED APR.15, 1912.

1,126,626, Patented Jan. 26, 1915.

HE NORRIS PETERS 60.. FHDTO-LITHO WASHING roN, D. c.

UNITED STATES PATENT ornron.

RICHARD JOHN FRY, OF KENSINGTON, VICTORIA, AUSTRALIA.

MACHINE FOR SHAPING PREPARED BLANKS IN THE MANUFACTURE OF HORSESHOES.

Application filed April 15, 1912.

To aZZ whom it may concern Be it known that I, RICHARD JOHN FRY, a. subject of the King of Great Britain, residing at Hardiman street, Kensington, in. the State of Victoria, Commonwealth of fulstralia, manufacturer, have invented certain new and useful Improvements in Machines for Shaping Prepared Blanks in the Manufacture of Horseshoes, of which the following is a specification.

The object of this invention is to provide exceedingly simple and useful improvements in machines for shaping prepared blanks in the manufacture of horse-shoes in which a heated blank is placed between two stop or abutment pins and an inside forming die movably mounted on a table. A forward movement is given to the said die by a pit man rod and eccentric to bend the blank and carry it into the sphere of operations of two outside forming dies. The said dies are mounted on pins passing vertically through the table and the said pins are provided with arms against which a sliding block supporting the said die is adapted to strike to force the outside forming dies against the bent blank and squeeze the heel portions of the same tightly on the said inside forming die. Directly the blank has been given the desired shape a press or hammer is operated by a cam and rocking beam to flatten and seat the formed shoe. During the time the hammer bearing on the formed shoe the continued operation of the eccentric is returning the pitman rod to its original position and in order to permit of it doing this a loose connection is effected between the outer end of said rod and the block to which the inside forming die is afiixed.

In order that the invention may be readily understood reference will now be had to the accompanying sheet of explanatory drawings, wherein Figure 1 is a view in side elevation of a horse-shoe bending machine fitted with some of the improvements comprised in the pres ent invention and showing part broken away to illustrate the operative parts thereof. Fig. 2 is a view in plan of Fig. 1. Figs. 3, 4, 5 and 5 are views of details in the construction of the improvements shown in Figs. 1 and 2. Fig. 6 is a view of a modification in the construction of the pitman rod connecting the forming die to its operating eccentric. Figs. 7 and 8 are views in plan of part of the machine showing modifica- Specification of Letters Patent.

Patented Jan. 26, 1915.

Serial No. 690,733.

tions in the means devised for bending the prepared blanks around an inside forming dle. Fig. 9 is a view illustrating details of the modification shown in the two preceding figures. Fig. 10 is view in sectional elevatlon showing modifications in the means employed to flatten formed horse-shoes. Fi 11 is a diagrammatic view showing modil cations in the arrangement of the operative parts of the machine. Fig. 12 is a view in sectional plan of part of Fig. 1 taken on the dotted line II. Figs. 13 and 14 are views of details in the construction of the invention hereinafter described.

Throughout these drawings like characters of reference have been employed to indicate similar parts in the different views and the numeral 1 designates the machine framing which is preferably cast as shown and is supported on a suitable bed or stand 2. Projecting forwardly from the front part of the framing 1 is a bifurcated extension 3, the upper surface of which forms a table and is made perfectly flat to insure a free movement thereover of a sliding mem her or plate 4:- This sliding member 4 is detachably secured by bolts 5 to a block 6 which is movably mounted within the bifurcated extension 3 and is actuated by a pitman 7 and an eccentric 8, the latter being mounted on a shaft 9 disposed crosswise in the rear of the framing 1. This said shaft 9 receives its motion from a driving shaft 10 fitted with belt and fly wheels 11 and 12, respectively, or in any other approved way. Fitted'to the shaft 9, one on each side of the eccentric 8, are two eccentrics 13 which are encircled by the lower ends of links 14: having their upper ends forming pivotal connections with the rear end of a rocking beam 15. The said rocking beam 15 is escillatorilymounted on a cross shaft 16 and its front end projects beyond the front of the framing and pivotally supports a hammer 17 The front of the framing over which the hammer 17 is reciprocated by the oscillatory motion of the beam 15 may be made at right angles to the surface of the bifurcated extension 3, as shown in Fig. 1,

or it may be made at an obtuse angle there-' to. as shown in Fig. 11. If preferred, the saidhammer may be arranged to operate at any angle other than those illustrated in the drawings and the operative parts of the machine can be made to correspond with the modified construction of framing. The

wheel the gear employed to transmit n10 tion to the shaft 9 from the driving shaft 10 is normally free to run on the first mentioned shaft and this said wheel can be placed in a fixed relationship to said shaft by means of clutch and lever mechanism of ordinary design. The said clutch lever may be actuated by means of: "a foot lever to throw the clutch ,in gear and this latter is adapted to be automaticallythrown out of gear again upon the completion. of a revolu= tion ithe shaft'9. The sliding member4 isadaptedto fitclosely on itop of the bi turcated extension 3 and forn'ied integrally therewith and projecting upwardly there from is orare one or more inside forming dies 18' around which the prepare'd blanks arebent to form horse-shoes. The inside forming die is preferably provided with a small beveledledge 19 near ,its lower. edge to "form a seating on the inner edge ofthe' or block 21 is rounded to form a knuckle bearing in' a similarly shapedrecess 23 formed in the outer end of the block 6. A spiral compression'spring 24 is fitted over the .pitman;ro d 7 and bears at one end against a-washer 25 abutting "against the rear-of; the block 6 and at the opp'osite end against acollar 26 {or-the like adjustably fitted to the said pitman rod.-- This form of construction will readilypermit of the pitmanrodmovingto its normal position independently of the inside forming die and whenthe pressure of the flattening hammer is removed from the shoe the said die will be instantly propelled to its; original position by the action of the spring on the pit man rod. v

A modification in the construction of the pitman rod 7 may be effected by forming it in two parts (see Fig. 6) andiconnecting them by atormof knuckle joint 27. -The forward end of the pitman rod passes through the saidblock 6 and-is provided with anut 22 and Washer 21, as before described, while the rear end is connectedto the eccentric 8 for operating the same. The said joint is made to buckle downwardly at the center-or-j ointed part, as sh oW-n'in dotted lines, when the pressure-of the hammer 17 prevents the inside forming die-18 moving back to its original position. "Dire tly the pressure of the hammer 17 is released from the shoe on the forming die 18 the sliding block 6 andits, attachedpartsare drawn to their original positions by means of a weight 28 or spring. (not shown) grille said weight 28 is connected to a lug 29 on the block; 6 by meansgof a flexible member '30 andthis latter passes over a pulley or roller .31

mounted on the extension 3 of the machine framing. J

S nppor ted transversely across the bifurcated entensipnS is a bar 32,;the ends of which are adjustably supported on vertical pins 33 projecting upwardlyjfrom the sur-.

face of the said extension, The height of thiscrOss-bar 32 may be adjusted by means ofnuts 34 or the likeandsecured adjustably to .eaeh side. ofthe center of said bar is an abutment'pin 35 against which the' prepared.

blanks 36 are adapted to, bear-when in ,the

act of being bentr These abutment pins 35 are so placed that the blanks are bent closely around the points of the; forming dies 18 leaving the heel portions thereofprojecting,

toward "the front of the machine in the form of a staple' Any approved form of guide or guides can be usedto correctly locate the blanks on the table so that they may be bent as desired. j

The heel. parts of the bent blanks are pressed; inwardly against the forming dies 18 means of laterallyoperating tools 37 having their inner IfZLCBS shaped to correspond to the outside ,of a formed shoe.

These tools 37 are formed at an approved point in their lengths with bosses .38 which are adapted to fit over studs or pins 39 project ngupwardly from the forward ends of levers 40 fitted rigidly toshafts or spindles 41 l0cated one on each side of the reciprocat ing member 4 and at right angles thereto. The said levers 4Q canbe made in the form of bell-cran'ks as shown in the drawings, or they may be given any other, approved formation; These shafts or spindles 41 are oscillatorily mounted in the machine framing and are provided ontheir opposite and lower ends with inwardly projecting arms 42 see Fig. 12with which thelower'part of the block 6 isadapted to come into contact when nearthe limit of itstravel in a rearward direction. When the block 6 comes into contact with the inwardly projecting, arms 42they are forced rearWardly and operate vthe spindles 41. carrying the bell cranks'40 with the adjustable heel shaping tools 37 inwardly and pressing the heel parts'o'f the shoes on the inside forming die 18. Directly the sliding member 4 commences ,to move forwardly on its return stroke thetools 37 are forced outwardly to their normal positions and the spindles'4l receive the bent ends of connecting rods 45 having their rear ends adjustably fitted to brackets 46 or the like fitted to or forming part of the framing of the machine. The outer ends of the tools 37 may also be provided with one or more holes 47 into which the forward ends of the connecting rods 45 may be inserted when it is desired to alter the operative positions of said tools. The rear ends of the connecting rods 45 may be screwed and provided with adjustment nuts 48 or the position of these said rods relatively with the brackets 46 may be adjusted by other approved or well known means. The adjustment of the said rods 45 permits of the shaped ends of the tools 37 being made to press more or less hard on the heel or on the side parts of a shoe, as preferred. The engagements between the connecting rods 45 and the brackets 46 must be sufficiently loose to permit of the former having a free pivotal movement to insure a correct working of the tools 37. The ends of the bell crank levers 40 opposite to those supporting the tools 37 are provided with screws 49 or other approved means for effecting an adjustment of the said levers relatively with the position of the movable dies 18 at any part of their travel. The tools 37 may be readily detached from the bell crank levers 40 and others of a different size or shape may be quickly substituted therefor while the latter may be arranged in any approved way to control the movement of the tools in a lateral direction and oppositely to each other.

In lieu of locating the stop or abutment pins 35 fixedly on top of the table they may be affixed to the inner ends of two oppositely bent levers 50 which may be oscillatorily pivoted at a suitable point in their lengths to pins, studs or the like 51 on the table. Said abutment pins 35 can be provided with rollers to reduce friction and to facilitate the operation of the machine. The inner ends of said levers 50 are arranged to move about the plate 4 to which the inside form ing dies 18 are affixed, while their outer ends are provided with pins or rollers 52 adapted to bear on the outer end of the said plate. The said plate 4 is provided on its upper surface with the inside forming dies 18 one for shaping front shoes and the other for shaping hind shoes of a like size. This plate 4 is given rounded ends and when it is in its outermost positionthe rollers on the outer ends of the levers 50 bear against or near the ends of the straight sides 53 of the plate or at that point where the curve com mencessee Fig. 7. hen the plate 4 and outer ends of the levers 50 are in the positions stated a heated blank 36 can be placed against the pins 35 on the opposite ends of the levers and these said pins will be sufiiciently far apart to allow of the said blank being bent by the movement of the dies 18. hen the inner die 18 is forced inwardly against the blank 36 the latter is bent into the form of a staple and during this operation the inner ends of the levers 50 are moved outwardly while the outer ends thereof move inwardly and follow the curvature of that end of the plate. The die 18 as before mentioned moves inwardly until it is between the shaped ends of the tools 37 which then operate as hereinbefore described to shape the side and heel'portions of the shoe.

The pins 35 on the levers 50 may be made adjustable while the levers themselves can be detachably affixed to the table to permit of them being quickly removed and replaced by others of a different size or for performing different kinds of work. The levers 50 are pivoted preferably midway between the pins and and as their inner ends move outwardly to follow the contour of the shoe being formed the outer ends move inwardly and follow a curve similar to that formed by the periphery of the formed shoe but made inversely thereto. Thus the outer ends of the levers 50 hearing against the inward curves on the side of the plate 4. causes the abutment pins on the inner ends of the said levers to move outwardly to give to the blank its correct shape. It is not absolutely essential to the correct working of the machine that the levers 50 should be pivoted at their centers as they can be pivoted at other preferred points and the curves on the side of the plate 4 may be al.- tered to correspond therewith. as will be well. understood.

The plate 4 may be shaped as illustrated in the drawings so as to be used at one end for shaping front shoes and at the opposite end for manufacturing hind shoes of the ame set.

If preferred. the shoe may be formed com 'iletely by means of the levers 50 and i the tools 37 for shaping the heel and side parts can be dispensed with. In order to accomplish this object the outer end. of the plate 4 is shaped as shown in Fig. 13 of the drawings with two oppositely disposed and inwardly curved recesses 53 around which the pins or rollers 52 on the outer ends of the levers 50 travel to make the abutment pins 35 bend the blanks into complete horse-shoes. These recesses 53 are identical in shape to the outer peripheries of the finished shoe when the levers 50 are pivoted centrally.

In order to permit of the plate 4shown in Figs. 13 and 14-being used to complete the bending processes as above described it may be formed at each end with a lug 54 which is adapted to fit within a recess formed in a detachable piece 56. .The said detachable piece 56 can be retained fixedly verse the plate to form othershoes tocomplete the sets being manufactured the said piece detached and a similarly shaped piece (not shown) is fitted to the opposite end o f the platewhich will now be placed .nearthe front of the machine. It will be oln ious that the said pieces56 may be of another shape than that shown and that said plates may be formed with a single die on its upper surface in which case the piece 36 may be formed integrally with the outer end ofv said plate. I

Instead of employing a hammer construetechas illustrated in Figs, 1 and 2 to flatten the formed shoes ahingedblock 58 (see l0) may be used and operated by the r6ckingbeam 15. This block is made perfectly flat on its underside and its forwardpart is hinged on a transverse spindle 5,9 the ends of which are supported in lugs or standards 60 formed on the table of the i'n ach ine Thetop of the said block 58 is connected,,to,theprojecting or forward end of the rocking beam 15 by means of links 61 or the like. If preferred, the said hinged block 58 may be provided on its top side with a jaw inwhich the projecting end of tl'ierocking beam 15 can be pivoted in an approvedway 4 Various slight and immaterial modifications may be made in the construction and arrangement, of the parts of the invention a s;il,lust11'ated in the drawing vwithout departing from the scope of the following claiming clauses.

lVhatI do claim is: I

In a machine of the class described, the combination with a flattening and seating press or hammer, of a forming die, a pitman r od, an eccentric upon which one end ofthepitman rod is mounted, a slidably mounted block supporting said die and deta'ehably, connected to the forward end of said p itnian roda nd by which it is actuated, a washer. or block on the end of the pitman rod forming a knuckle bearing on the front of the sliding block, a nut on said pitman rod f'or adjusting the position of the inside forming die, and a spring for keeping the sliding block normally at the end of the pitman rod,substanti ally as described. and for the purposes set forth. I

2. In a machine of the class described, the combination with a flattening and seating pressor hammer, of an inside forming die, a. slidably, mounted block supporting said die, .an oscillatorily mounted spindle at each side of said die and arranged at right angles thereto, inwardly projecting arms on one I end of said spindles with which the block cooperates to oscillate the. spindles, levers on theopposite ends of said spindles, and shaping tools pivotal ly carried by said levers to shape the heels of the shoes, substantially as described and for the purposes set forth.

In a machine of the class described, the combination with a flattening and seat ng press or hammer, ofa forming die, a slidably mounted'block upon which said die is supoperates to oscillate the spindles, levers on" the oppositeends ofsaid spindles, a shap ng tool pivotally mounted on one arm of each lever, and adjusting means connected tothe other arm of said levers, substantially as and forthe purposespecified. 1 ,7 n j 7 4c. Inamachine of the classdescribed, the combination with a flattening and seating press or hammer, of a forming die, a slid: ably mounted block upon which said the is supported, an oscillatory spindle at each side of, said die and arranged at right angles thereto, inwardly projecting arms on one end of said spindles, levers on the opposite ends of said spindles with which the sliding block cooperates to oscillatethe spindles, shaping tool pivotally mounted on one arm of each lever, adjusting screws connected to the other arm of said'levers, and adjustable links connecting the outer ends ofthe shap ing ,tools to the machine. framing, substantially as and for thepurpose specified,

5. In a machine of the class described, the combination of a flattening and seating} press or hammer, a forming die,'a s lidably mounted block upon which said die is supported, means to reciprocate the block, an oscillating lever at each side ofv the path of movement of the die with which the block cooperates to in'ipart oscillating movement thereto, I and shaping tools pivotally carried by said levers or arms, substantially asand for the purpose specified. V j

6. In a machine of the class described, the combination of afia'tte'ning and seating press or hammer, a forming die, a slidabl'y mount- 7 ed block upon which said die is supported,

means to reciprocate the block, an oscillating lever on each side of thepath of movement of the die with which the block cooperates to cscillate the lever, shaping tools pivotally carried by said levers or arms to engage with V and shape the heels of the shoe, and'mean's to adjust the positions of said tools, substantially as and for the purpose specified.

7. In a machine of the class described, the combination of a flattening and seating press or hammer, a slidably mounted plate having portlons of 1ts sides ad acent its outer ends strai ht and arallel with each other and 7 portions curved inwardly from the inner ends of thestrai ht ortions Y a formin die supported by the plate, levers at opposite sides of and oscillated by the plate, and

forming tools pivotally carried by said levers between which the die is adapted to pass, to bear against and shape the blank to the die.

8. In a machine of the class described, the combination with a flattening and seating press or hammer, of a reciprocable plate having portions of its sides straight and parallel with each other and portions curving inwardly from the ends of the straight portions, forming dies supported on said plate, a bell-crank lever mounted at each side of said plate, abutments projecting from the inner ends of said levers, the outer ends of said levers being adapted to bear against and follow the sides of the plate, substantially as and for the purpose specified.

9. In a machine of the class described, the combination with a flattening and seating press or hammer, of a reciprocable die carrying plate having portions of its side straight and parallel with each other and portions curved inwardly from the straight portions adjacent the ends, detachable end pieces for said plate having portions of its sides curved inwardly to meet the curved portions of the plate, and pivotally supported tools to shape the blank around the die, said tools having portions to engage with the plate and its detachable piece to cause the tools to bear against and form the blank to the shape of the die.

In witness whereof I have signed this specification in the presence of two witnesses.

RICHARD JOHN FRY. IVitnesses A. J. CALLMAN, J. H. ANDERSON.

Copies! of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

